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Plastic Deformation During the Expansion of a Biomedical Stent

Application ID: 2197

A stent is a wire-mesh tube used to open a coronary artery during angioplasty, a process for the removal or compression of plaque. Their design is of significance for percutaneous transluminal angioplasty with stenting. During this procedure, a stent is deployed into the blood vessel by means of a balloon. The expanded stent acts as a scaffold that keeps the blood vessel open.

During this procedure, damage can be inflicted on the artery by both the nonuniform expansion of the stent, as well as by its foreshortening. To check the viability of a stent design, you can study the deformation process under the influence of the radial pressure that expands the stent. With this model you can both monitor the dogboning and foreshortening effects, and draw conclusions on how to change the geometry design parameters for optimum performance.